PIAO Junjie , ZHANG Yibo , CHEN Xiaowei , NIU Shuang , LÜ Xin , YANG Zhaojun , SUN Zhiwen
  • Department of Joint Surgery, Chifeng Municipal Hospital, Chifeng Inner Mongolia Autonomous Region, 024000, P. R. China;
SUN Zhiwen, Email: sunzhiwen0011@163.com
Lateral condyle sliding osteotomy; lateral femoral bowing deformity; extra-articular deformity; total knee arthroplasty
10.7507/1002-1892.202109019
Export PDF Favorites Scan Get Citation

Abstract Full text Figures/Tables References Cited by

Objective  To investigate the effectiveness of lateral condyle sliding osteotomy (LCSO) in total knee arthroplasty (TKA) for the treatment of lateral femoral bowing deformity. Methods  The clinical data of 17 patients with lateral femoral bowing deformity treated by LCSO during TKA between July 2018 and July 2020 was retrospectively analysed. There were 3 males and 14 females, with an average of 63.2 years (range, 58-68 years). The etiology of lateral femoral bowing deformity included 12 cases of femoral developmental deformity and 5 cases of femoral fracture malunion. Kellgren-Lawrence classification of knee osteoarthritis was 4 cases of grade Ⅲ and 13 cases of grade Ⅳ. The preoperative hip-knee shaft was 9.5°-12.5° (mean, 10.94°). The disease duration was 3-25 years (mean, 15.1 years). The mechanical lateral distal femur angle (mLDFA), hip-knee-ankle angle (HKA), and mechanical axis deviation (MAD) of the distal femur were measured before operation and at last follow-up to evaluate the correction of extra-articular deformities in the joints and the recovery of mechanical force lines of the lower extremities. The knee society score (KSS) knee score and function score, visual analogue scale (VAS) score, knee joint range of motion (ROM) were used to evaluate effectiveness. The knee varus/valgus stress test and osteotomy healing by X-ray films were performed to evaluate the joint stability and the safety of LCSO. Results  All incisions of the patients healed by first intention after operation, and there was no early postoperative complication such as infection of the incision and deep vein thrombosis of the lower extremities. All 17 patients were followed up 12-36 months, with an average of 23.9 months. The osteotomy slices all achieved bony healing, and the healing time was 2-5 months, with an average of 3.1 months. After operation, the knee varus/valgus stress tests were negative, and there was no relaxation and rupture of the lateral collateral ligament, instability of the knee joint, loosening, revision and infection of the prosthesis occurred. At last follow-up, mLDFA, HKA, MAD, knee ROM, VAS score, KSS knee score and function score significantly improved when compared with preoperative ones (P<0.05). Conclusion  LCSO is effective and safe in TKA with lateral femoral bowing deformity. Extra-articular deformities are corrected intra-articularly. The mechanical force line and joint balance of the lower extremities can be restored simultaneously in an operation.

Citation： PIAO Junjie, ZHANG Yibo, CHEN Xiaowei, NIU Shuang, LÜ Xin, YANG Zhaojun, SUN Zhiwen. Effectiveness analysis of lateral condyle sliding osteotomy in total knee arthroplasty for the treatment of lateral femoral bowing deformity. Chinese Journal of Reparative and Reconstructive Surgery, 2022, 36(2): 183-188. doi: 10.7507/1002-1892.202109019 Copy

  • Previous Article

    Value of personalized extramedullary positioning technique on tibia side for coronal alignment of tibial prosthesis in total knee arthroplasty

  • Next Article

    Analysis of the influence of tibial component posterior slope angle on short- and mid-term effectiveness of unicompartmental knee arthroplasty